Head rest



FIG. 1 is a top-left-front perspective view of the head rest showing my design;

FIG. 2 is a bottom-rear-right perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a left elevational view thereof;

FIG. 6 is a right elevational view thereof;

FIG. 7 is a front elevational view thereof; and,

FIG. 8 is a rear elevational view thereof.

The broken line showing the studs in FIGS. 1-7 and the broken line showing the slot in FIGS. 1, 2, and 8, are included for the purpose of showing environmental structure and form no part of the claimed design. 

CLAIM The ornamental design for a head rest, as shown and described. 